If the allele frequency for the recessive single allele that causes a particular rare hair color is 0.02, how frequently would you expect the hair color to be present in humans?
A)1 in every 50 individuals
B)1 in every 2000 individuals
C)1 in every 2500 individuals
D)1 in every 5000 individuals

Question

Quizplus · Accepted Answer

Given the allele frequency for the recessive allele is 0.02 (or 2%), the frequency of the hair color (which requires two copies of the recessive allele) is calculated using the Hardy-Weinberg principle as p^2 + 2pq + q^2 = 1, where q is the frequency of the recessive allele. Since q = 0.02, q^2 = 0.0004, which means the trait would be present in 1 out of every 2500 individuals (since 1/0.0004 = 2500).

If the Allele Frequency for the Recessive Single Allele That